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Finding the Fourth Proportional to 18,553.80, 25,603.40 and 10,170.12

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Solution

The fourth proportional to 18,553.80, 25,603.40 and 10,170.12 is: 14,034.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,553.80 : 25,603.40 = 10,170.12 : x
  2. Step 2: Convert to fraction form
    18,553.80/25,603.40 = 10,170.12/x
  3. Step 3: Cross multiply
    18,553.80x = 25,603.40 × 10,170.12
  4. Step 4: Simplify right side
    18,553.80x = 260,389,650.41
  5. Step 5: Solve for x
    x = 260,389,650.41/18,553.80
  6. Step 6: Final answer
    x = 14,034.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.